Analysis of blasting damage in adjacent mining excavations

Yugo, Nick; Shin, Woo Jong

doi:10.1016/j.jrmge.2014.12.005

Cited by 32 publications

(12 citation statements)

References 2 publications

(3 reference statements)

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“…Numerous works are devoted to this aspect (e.g. Akande & Lawal, 2013;Inoue et al, 2014;Sasaoka et al, 2015, Yugo & Shin 2015. This article continues integrated studies discussed elsewhere Isheysky & Yakubovskii, 2016;Isheysky, 2014).…”

Section: Introductionmentioning

confidence: 58%

Determination of rock mass weakening coefficient after blasting in various fracture zones

Isheyskiy¹,

Marinin²

2017

10.5267/j.esm

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Quality of blast preparation for rock beneficiation influences both on integrity of mineral stock in particular and in economical performances of enterprise operations in general. While rock processing for obtaining of crushed stone the yield of screenings is high, its amounts depend on rock strength properties. Investigation into the influence of drilling and blasting parameters on strength properties of blasted rocks is an urgent research and practical task for mining companies producing building stones. This article discusses results of full-scale experiment aimed at determination of strength of blasted rocks in shotpile with accounting for fracture zones as a function of rock massif saturation with energy of explosive substance.

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Section: Introductionmentioning

confidence: 58%

Determination of rock mass weakening coefficient after blasting in various fracture zones

Isheyskiy¹,

Marinin²

2017

10.5267/j.esm

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“…Its spectrum is continuous and contains frequencies from low values to very high values from 1 to 300 Hz [15]. To determine the size of the maximum amplitude of oscillation, it is necessary to take the type and characteristics of rock disintegration, the parameters of explosives, and blasting technology performed into account [16,17]. For the establishment of maximum oscillation rate in practice, there is the empirical relationship called Langefors or also Koch [18][19][20][21][22].…”

Section: Methodsmentioning

confidence: 99%

Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting

Kudelas

Pandula

Cehlár

et al. 2019

Shock and Vibration

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The presented paper deals with attenuation of seismic waves, which depends on the degree of disintegration of the rock environment in which seismic waves are propagated due to the explosion of explosive charges during blasting operations. Measurements of the impact of seismic waves were conducted to determine the best possible way to absorb these waves. The aim of the article is to identify the existence of a critical distance and the determination of the critical point from which the propagation of the velocity is not dependent on the type of deposit and the environment in which the seismic wave propagates. Statistical methods were used for these findings. The result is the determination of the distance of 80 m in which the speed on the individual deposits varied. From this limit on, there was no significant difference in the speed of propagation on the individual deposits.

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“…Drilling-blasting techniques are often used in coal mining, tunnel excavation, and other projects [1][2][3][4]. e geological conditions are more complicated at greater depths which have grown more common in recent years.…”

Section: Introductionmentioning

confidence: 99%

In Situ Stress Effects on Smooth Blasting: Model Test and Analysis

Yang

Fang

Yang

et al. 2020

Shock and Vibration

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Most of the roadway excavation is completed by the drilling and blasting method. With the increase of buried depth, the existence of ground stress will generate a significant impact on the rock blasting, especially on the smooth blasting. In this study, self-made homogeneous similar materials and digital image correlation methods were used to determine influence of ground stress on the smooth blasting under uniform explosive charge parameters and various in situ stress conditions. The results show that the crack outline after blasting changes from zigzag to straight in shape, and multifractal calculation results of the rupture section between blastholes show that the fracture surface becomes flatter as ground stress increases, which is conducive to roadway formation. The strain and equivalent strain rate obviously decrease as the distance between the blasthole and measuring points increases. The same trend occurs as the confining pressure goes up. Meanwhile, a postexplosion acoustic wave test indicates that confining pressure inhibits damage of the retained rock, which is consistent with strain and equivalent strain rate results. Finally, we discussed the crack propagation mechanism of rock in smooth blasting.

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Analysis of blasting damage in adjacent mining excavations

Cited by 32 publications

References 2 publications

Determination of rock mass weakening coefficient after blasting in various fracture zones

Determination of rock mass weakening coefficient after blasting in various fracture zones

Critical Distance of the Seismic Waves’ Impact in Disintegration of Rock Blasting

In Situ Stress Effects on Smooth Blasting: Model Test and Analysis

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